x = 2
Пошаговое объяснение:
2 2/5*x + 1 2/3 - 5/6 = 5 19/30
2 2/5*x = -5/3 + 5/6 + 169/30
2 2/5*x = 169/30 + 25/30 - 50/30
2 2/5*x = 144/30
2 2/5*x = 4 24/30
2 2/5*x = 4 4/5
12/5*x = 24/5
x = 24/5 : 12/5
x = 24/5 * 5/12
x = 2/1 * 1/1
